<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<script>document.write("hello world");</script>
		<title>Div+CSS测试</title>
		<link type="text/css" rel="stylesheet" href="style.css">
		<style type="text/css">
			p{color: #ff0000 !important;}
			.blue{color: #0000ff;}
			#id1{color: #00ff00;}
			p.center{text-align: center;}
		</style>
	</head>
	<body class="one" >
		<div id="container">
			<div id ="header">
				<h1>计算机报名系统</h1>
			</div>
			<div id ="sidebar">
				<h3>左侧菜单</h3>
				<p>考生报名</p>
				<p>考生登录</p>
				<p>浏览信息</p>
			</div>
			<div id ="maincontent">
				<p class="center"><img src="https://p1.ssl.qhimg.com/t011f0b1e75107fc865.jpg" width="500" title="王丽坤" alt="王丽坤的图片https://p1.ssl.qhimg.com/t011f0b1e75107fc865.jpg"></p>
			</div>
			<div id ="footer">好好大学出版社</div>
		</div>
		<p id="id1"  class="blue">这里显示颜色</p>
		<br>
	</body>
</html>